Whisker plot displaying the 68% marginalized confidence intervals for the Hubble constant H₀ (km s⁻¹ Mpc⁻¹) and spatial curvature parameter Ω_K, derived from both viscous cold dark matter models with a cosmological constant (ΛvCDM and ΛvCDM+Ω_K with m = 0 and free m) and the standard ΛCDM model, including its curved extension. The analysis includes different datasets: DESI, CC, BAO, PP and PPS supernova samples. The red vertical dashed line indicates the H₀ measurement from R22 (Riess et al. 2022)), while the blue vertical dashed line marks the ΛCDM prediction for a flat universe (Ω_K = 0).